DIRECTOR: Handle keyDown in 1-ary processEvent

Might change semantics by calling the standard chain for input events.

That is what the D4 docs suggest anyway.

engines/director/events.cpp

@@ -110,7 +110,7 @@ void DirectorEngine::processEvents() {
 					warning("Keycode: %d", _keyCode);
 				}
 
-				_lingo->processEvent(kEventKeyDown, kGlobalScript, 0);
+				_lingo->processEvent(kEventKeyDown);
 				break;
 
 			default:

engines/director/lingo/lingo-events.cpp

@@ -175,6 +175,10 @@ void Lingo::processInputEvent(LEvent event) {
 			else
 				g_lingo->processEvent(kEventNone, kFrameScript, currentFrame->_sprites[spriteId]->_scriptId);
 		}
+		if (event == kEventKeyDown) {
+			// TODO: is the above condition necessary or useful?
+			g_lingo->processEvent(event, kGlobalScript, 0);
+		}
 		runMovieScript(event);
 	}
 }